[Bug libc/12318] New: i686 glibc is miscompiled

[Bug libc/12318] New: i686 glibc is miscompiled

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12318

           Summary: i686 glibc is miscompiled
           Product: glibc
           Version: 2.13
            Status: NEW
          Severity: critical
          Priority: P2
         Component: libc
        AssignedTo: drepper.fsp@gmail.com
        ReportedBy: hjl.tools@gmail.com
                CC: jakub@redhat.com


On Fedora 14/i686, commit 42acbb92c861e97a6e1293ea853db88342a1bf53:

http://sourceware.org/git/?p=glibc.git;a=commit;h=42acbb92c861e97a6e1293ea853db88342a1bf53

miscompiled glibc. I got

CPP='gcc -m32 -E -x c-header' 
/export/build/gnu/glibc/build-i686-linux/elf/ld-linux.so.2 --library-path
/export/build/gnu/glibc/build-i686-linux:/export/build/gnu/glibc/build-i686-linux/math:/export/build/gnu/glibc/build-i686-linux/elf:/export/build/gnu/glibc/build-i686-linux/dlfcn:/export/build/gnu/glibc/build-i686-linux/nss:/export/build/gnu/glibc/build-i686-linux/nis:/export/build/gnu/glibc/build-i686-linux/rt:/export/build/gnu/glibc/build-i686-linux/resolv:/export/build/gnu/glibc/build-i686-linux/crypt:/export/build/gnu/glibc/build-i686-linux/nptl
/export/build/gnu/glibc/build-i686-linux/sunrpc/rpcgen -Y ../scripts -h
rpcsvc/rstat.x -o
/export/build/gnu/glibc/build-i686-linux/sunrpc/rpcsvc/rstat.T
make[3]: ***
[/export/build/gnu/glibc/build-i686-linux/sunrpc/rpcsvc/rstat.stmp] Illegal
instruction 

I am using gcc-4.5.1-4.fc14.i686.

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[Bug libc/12318] i686 glibc is miscompiled

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12318

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-14 15:37:59 UTC ---
My machine has

flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ht tm pbe nx lm constant_tsc pebs
bts pni dtes64 monitor ds_cpl vmx cid cx16 xtpr pdcm lahf_lm tpr_shadow

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[Bug libc/12318] i686 glibc is miscompiled

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12318

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-14 15:52:48 UTC ---
Typo:

diff --git a/sysdeps/i386/i686/multiarch/strcmp.S
b/sysdeps/i386/i686/multiarch/strcmp.S
index 8724594..b08fd08 100644
--- a/sysdeps/i386/i686/multiarch/strcmp.S
+++ b/sysdeps/i386/i686/multiarch/strcmp.S
@@ -64,7 +64,7 @@ ENTRY(STRCMP)
     leal    __STRCMP_SSSE3@GOTOFF(%edx), %eax
     testl    $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%edx)
     jnz    2f
-    leal    __STRCMP_IA32@GOTOFF(%edx), %ecx
+    leal    __STRCMP_IA32@GOTOFF(%edx), %eax
 2:    ret
 END(STRCMP)
 # else

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[Bug libc/12318] i686 glibc is miscompiled

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12318

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-14 19:03:26 UTC ---
Fixed by commit 283007197c526f8f59bdc029a38d76538c70b0ff:

http://sourceware.org/git/?p=glibc.git;a=commit;h=283007197c526f8f59bdc029a38d76538c70b0ff

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[Bug libc/12318] i686 glibc is miscompiled

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=12318

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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